Frequently Asked Questions

LINK BAND is a wearable device worn on the wrist that measures heart rate and heart rate variability (HRV) in real-time using a PPG sensor. The collected data is analyzed through machine learning algorithms to provide feedback on your focus and relaxation levels during meditation sessions.

Up to 8 hours of continuous use on a single charge, and up to 72 hours in standby mode. It takes approximately 1 hour 30 minutes to fully charge via USB-C.

Compatible with iOS 15.0+ and Android 11.0+ devices via Bluetooth 5.0. Developers can freely integrate using our dedicated SDK.

Absolutely. LINK BAND supports meditation experiences for all levels, from beginners to experts. Our guided meditation mode makes it easy for first-time users to get started.

Domestic shipping within Korea takes 2-3 business days, and international shipping takes 5-10 days. A tracking number will be emailed once your order ships.

Returns are accepted within 30 days of receipt. Defective products are fully refunded. Change-of-mind returns are processed based on product condition. See our refund policy page for details.

For corporate purchases and bulk orders, please contact us through our Business inquiry page. Our dedicated team will provide customized quotes. University and research institution purchases are also available.

Yes, LINK BAND can be used for research. PPG sensor data and HRV analysis results can be extracted as RAW data through our SDK. Contact us through our Research page for research collaboration opportunities.